In that case, open up your indiNPC folder and see if there's a folder named "backup" in there. If it's there, it should be empty. If not, make one, and then try running the installation again.
I have a very similar problem with installation. I have BG Tutu with the BP Mod with G3 and Bone hill installed successfully on top. However, I cannot install the Indira mod. I do have a backup folder in there, which is empty. The debug file says:
WeiDU v 161 Log
C:\Program Files\Black Isle\BGII - SoA\Setup-IndiNPC.exe
[./Chitin.key] loaded, 859747 bytes
[./Chitin.key] 350 BIFFs, 60663 resources
[dialog.tlk] loaded, 15994876 bytes
[dialog.tlk] 123257 string entries
[./Autorun.ini] loaded, 1452 bytes
[./baldur.ini] loaded, 3430 bytes
Possible HD/CD Path: [C:\Program Files\Black Isle\BGII - SoA\]
Possible HD/CD Path: [C:\Program Files\Black Isle\BGII - SoA\CD1\]
Possible HD/CD Path: [C:\Program Files\Black Isle\BGII - SoA\CD2\]
Possible HD/CD Path: [C:\Program Files\Black Isle\BGII - SoA\CD2\]
Possible HD/CD Path: [C:\Program Files\Black Isle\BGII - SoA\CD3\]
Possible HD/CD Path: [C:\Program Files\Black Isle\BGII - SoA\CD4\]
Possible HD/CD Path: [C:\Program Files\Black Isle\BGII - SoA\CD5\]
[./Keymap.ini] loaded, 5615 bytes
[./Mplaynow.ini] loaded, 230 bytes
[./TDD_ToB.ini] loaded, 2181 bytes
[./TDD_ToB_modver.ini] loaded, 48 bytes
[dialog.tlk] claims to be writeable.
[dialog.tlk] claims to be a regular file.
[WeiDU.log] parsed
[SETUP-INDINPC.TP2] parsed
Choose your language:
0 [English]
1 [Francais]
Using Language [English]
[English] has 1 top-level TRA files
[IndiNPC\English\setup.TRA] parsed
[IndiNPC\English\setup.TRA] has 27 translation strings
SETUP-BP-BGT-NEJ_PATCH313.TP2 0 0 Installed
SETUP-BONEHILL.TP2 0 0 Installed
SETUP-BONEHILL.TP2 0 1 Installed
SETUP-TGC1.TP2 0 0 Installed
Install Component [Indira NPC for BG1Tutu]
[Y]es or [N]o or [Q]uit?
Installing [Indira NPC for BG1Tutu]
Copying and patching 1 file ...
[IndiNPC/Creatures/J#Indi01.cre] loaded, 1208 bytes
Copied [IndiNPC/Creatures/J#Indi01.cre] to [override/J#Indi01.cre]
Copying and patching 2 files ...
[IndiNPC/Creatures/J#Indi03.cre] loaded, 1268 bytes
Copied [IndiNPC/Creatures/J#Indi03.cre] to [override/J#Indi03.cre]
[IndiNPC/Creatures/J#Indi04.cre] loaded, 1268 bytes
Copied [IndiNPC/Creatures/J#Indi04.cre] to [override/J#Indi04.cre]
ERROR locating resource:
Resource [_bimoen.dlg] not found in KEY file:
[./chitin.key]
IF evaluates to false
Compiling 1 dialogue ...
BIFF may be in hard-drive CD-path [C:\Program Files\Black Isle\BGII - SoA\CD5\/data/BP-RULE.bif]
BIFF may be in hard-drive CD-path [C:\Program Files\Black Isle\BGII - SoA\CD4\/data/BP-RULE.bif]
BIFF may be in hard-drive CD-path [C:\Program Files\Black Isle\BGII - SoA\CD3\/data/BP-RULE.bif]
BIFF may be in hard-drive CD-path [C:\Program Files\Black Isle\BGII - SoA\CD2\/data/BP-RULE.bif]
BIFF may be in hard-drive CD-path [C:\Program Files\Black Isle\BGII - SoA\CD2\/data/BP-RULE.bif]
BIFF may be in hard-drive CD-path [C:\Program Files\Black Isle\BGII - SoA\CD1\/data/BP-RULE.bif]
BIFF may be in hard-drive CD-path [C:\Program Files\Black Isle\BGII - SoA\/data/BP-RULE.bif]
[C:\Program Files\Black Isle\BGII - SoA\/data/BP-RULE.bif] 1368011 bytes, 410 files, 0 tilesets
[TRIGGER.IDS] parsed
[indinpc/bimoen.d] parsed
Processing 1 dialogues/scripts ...
Adding _BIMOEN to internal list of available DLGs
[_BIMOEN.DLG] saved 1 states, 1 trans, 1 strig, 0 ttrig, 0 actions
Copying and patching 1 file ...
ERROR locating resource:
Resource [FW5201.are] not found in KEY file:
[./chitin.key]
ERROR Installing [Indira NPC for BG1Tutu], rolling back to previous state
[IndiNPC/Backup/0/UNSETSTR.0] SET_STRING uninstall info not found
[IndiNPC/Backup/0/UNINSTALL.0] loaded, 87 bytes
Will uninstall 4 files for [SETUP-INDINPC.TP2] component 0.
Deleting [override/J#Indi01.cre] (to restore original game condition)
Deleting [override/J#Indi03.cre] (to restore original game condition)
Deleting [override/J#Indi04.cre] (to restore original game condition)
Deleting [override/_BIMOEN.DLG] (to restore original game condition)
Uninstalled 4 files for [SETUP-INDINPC.TP2] component 0.
SETUP-BP-BGT-NEJ_PATCH313.TP2 0 0 Installed
SETUP-BONEHILL.TP2 0 0 Installed
SETUP-BONEHILL.TP2 0 1 Installed
SETUP-TGC1.TP2 0 0 Installed
ERROR: Failure("resource [FW5201.are] not found")
PLEASE email the file SETUP-INDINPC.DEBUG to
ghreyfain@pocketplane.netUsing Language [English]
[English] has 1 top-level TRA files
[IndiNPC\English\setup.TRA] parsed
[IndiNPC\English\setup.TRA] has 27 translation strings
Install Component [Indira NPC for BG1Tutu]
[Y]es or [N]o or [Q]uit?
Skipping [Indira NPC for BG1Tutu]
[SETUP-BP-BGT-NEJ_PATCH313.TP2] parsed
[SETUP-BONEHILL.TP2] parsed
[SETUP-TGC1.TP2] parsed
[TGC1/translations/english/setup.tra] parsed
[TGC1/translations/english/setup.tra] has 11 translation strings
[TGC1/translations/english/creatures.tra] parsed
[TGC1/translations/english/creatures.tra] has 39 translation strings
[TGC1/translations/english/items.tra] parsed
[TGC1/translations/english/items.tra] has 12 translation strings
WeiDU Timings
TOTAL 0.828 s
unmarshal TLK 0.204 s
load TLK 0.156 s
loading files 0.156 s
loading files 0.140 s
parsing .d files 0.125 s
parsing .ids files 0.000 s
unmarshal BIFF 0.000 s
unmarshal KEY 0.094 s
parsing .tp2 files 0.062 s
parsing .tra files 0.031 s
saving files 0.016 s
marshal DLG 0.000 s
process .D files 0.000 s
resolve labels 0.000 s
resolve strings 0.000 s
process actions 0.000 s
process copy_trans 0.000 s
preprocess 0.000 s
find local string 0.000 s
parsing .log files 0.000 s
Thanks,
David